Coke extractor for vertical retorts



FeB. 15,1927. 1 611,132

F. J. WEST ET AL COKE EXTRACTOR FOR VERTICAL RET ORTS Filed April; 15.1926 4 Sheets-Sheet 1 E (1 6 I u q 1 Fig.1 7 a '7 I P Wesz';

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COKE EXTRACTOR FOR VERTICAL RETORTS Filed April 15, 1926 4 She pts-Sheet2 2 J w w Wr far;

Fb. F. J. WEST ET AL COKE; EXTRACTOR FOR VERTICAL RETORTS Filed April15, 1926 4 Sheets-Sheet 5 ZJH. West l/ velv-fors Feb. 15 1927.

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I COKE EXTRACTOR FOR VERTICAL RETORTS Filed April 15, 1926 4Sheets-Sheet 4 Patented Feb. 15, 1927.

UNITED STATES PATENT OFFICE.

FREDERICK JOSEPH WEST AND'IERNEST WEST, 0F I/EANCHES'IER, ENGLAND, AS-

SIGNORS TO WESTS GAS IMPROVEMENT COMPANY LIMITED, OF MANCHESTER,

-ENGLANI), A BRITISH COMPANY.

COKE EXTRACTOR FOR VERTICAL RETORTS.

Application filed April 15, 1926, Serial No. 102,335, and in GreatBritain June 30, 1925.

This invention relates to coke extractors for vertical. retorts of thetype in which the coke is gradually lowered by a descending platform anddischarged from the platform, the latter being then returned to itsuppermost position, and has for its object to provide an improvedconstruction of extractor of the said type.

Our invention comprises the provision beneath the vertical retort of acoke chamber having a vertically reciprocated ram therein and a. door orthe like thereon, and means for bridging across the top of the cokechamher and forming a support for the material in the retort when thecontents of the coke chamber are being discharged.

Referring to the accompanying explanatory drawings z- Figure 1 is asectional elevation illustrate ing the lower part of a vertical retorthaving our improved coke extractor applied thereto.

Figure 2 is an elevation looking from right to left of Figure 1.

Figures 3 and 4 are views similar to Fig ures 1 and 2 but showing amodified arrangement of the means for operating the ram of the cokeextractor.

The same reference letters in the views indicate the same or similarparts.

In accordance with our invention, and as illustrated in Figures 1 and 2,we provide a coke chamber a beneath the lower end 6 of the verticalretort. A ram 0 having an inclined upper face is adapted to bevertically reciprocatcd in said coke chamber by suitable means. One sideof the coke chamber has a door (Z thereon hinged about its upper edge ate and adapted to be opened by suitable means when required. Latchessecure the door when it is closed. At the top of the coke chamber a andto one side thereof, we provide a chamber or casing g in which can movean inclined grid 71. having, if desired, rack teeth 2' on its lower sidewhich are engaged by a pinion by which the grid can be moved outwards sothat it bridges across the top of the coke chamber as shown in Figure 1and forms a support for the coke in the retort above, when the contentsof the coke chamber are being discharged through the hinged door clthereon. When the grid is withdrawn, it comes within the chamber orcasing g and clear of the coke passing down into the coke chamber.

The vertically reciprocated ram 0 during its downward movementdetermines the rate at which coke is delivered from the retort, suchrate being adjustable to suit the rate of carbonization in the retort.When it reaches the bottom of its stroke, the movable grid 7b is putinto position across the top of the coke chamber, and the door (Z of thelatter opened. The coke is then discharged, the door d again closed, theram 0 raised by hand or by power to its uppermost position and themovable grid h withdrawn. The cycle of operations is then repeated. The

angle of inclination of the movable grid it corresponds to that'of theface of the ram, so that the latter lies under the former before thegrid is withdrawn.

The means for reciprocating the ram comprise a double or looped wirerope in which has its looped end held or engaged by a fixed pulley at'L(Figure 2). The said rope passes round fired pulleys m, and pulleys n atthe lower extremities of the ram 0. The two ends of the rope are coiledon to a drum 0 keyed upon a spindle ;0 having a portion of a claw-clutchfeather keyed thereon. The worm wheel 9" which has the other part of theclaw-clutch integral therewith is free upon the shaft p and is rotated ba worm 8 upon a shaft having a ratchet wheel I? thereon. The ratchetwheel is turned by pawl mechanism in a manner similar to that employedin connection with the known types of worm extractor gear of verticalretorts. After the drum 0 has wound off or paid out the desired lengthof rope to lower the ram 0 to the bottom of the coke chamher, aknock-off mechanism comes into action and disengages the two parts ofthe claw-clutch The ram then comes to rest and the coke chamber isemptied. The ram can be raised to its upper position by the handle 3which turns the shaft 29 with the drum 0 thereon through speed reductiongearing u. The claw-clutch is then re-engaged and the cycle ofoperations repeated.

The operation of the pinion j by which the grid 72. is traversed iseffected by the hand chain c and worm and worm wheel gearing.

In the arrangement shown in Figures 3 and 4, the rain 0 is operatedhydraulically, the water under pressure being admitted by the valve 20to the lower end of the cylinder in having the piston g therein. Aknock-0E motion indicated'by .2 closes the valve to when the piston 1reaches the top of its stroke. The descent of the piston is controlledby regulating the'rate of outflow of water therefrom through the valve 2(Fig ure 4:).

e do not limit ourselves to any particular means for reciprocating theram and for traversing the movable grid or opening the coke chamberdoor, but may vary the same to suit requirements.

\Ve claim 1. The combination with a vertical retort, of a coke chamberfixed beneath said retort, a ram movable in said chamber, a door at oneside of the chamber, and means for bridging across the upper end or thechamher and forming a support for the material in the retort during thedischarge of the contents of the chamber through the said door.

2. The combination with a vertical retort, of a coke chamber fixedbeneath the said retort, a ram movable in said chamber, a door at oneside of the chamber, and an inclined bridging member movable across theupper end of the chamber for supporting the material in the retortduring the discharge of the contents of the chamber through the saiddoor.

3. The combination with a fixed retort, of a coke chamber fixed beneathsaid retort, a ram movable in said chamber, a door at one side of saidchamber, an inclined platform forming the upper surface of said ram, and

a bridging member movable across the up per end of the chamber forsupporting the material in the retort during the discharge of thecontents of the chamber through the said door, the said bridging memberbeing inclined to correspond with the said inclined platform.

4. The combination with a vertical retort, of a coke chamber fixedbeneath said retort, a ram movable in said chamber, a door at one sideof the chamber, an inclined bridging member movable across the upper endor the chamber for supporting the material in the retort during thedischarge of the contents otthe chamber through the said door, and acasing into which the said bric ging member is withdrawn to leave aclear passage between the retort and the coke chamber. I

5. The combination with a vertical retort, of a coke chamber fixedbeneath said retort, a ram movable in said chamber, a door at one sideof the chamber, an inclined bridging member for supporting the materialin the retort during the discharge of the contents of the chamberthrough the said door, means including a rack and pinion forreciprocating the said member across the upper end of the chamber, and acasing into which such member is withdrawn to leave a clear passagebetween the retort and the coke chamber.

In testimony whereof we have signed our names to this specification.

FREDERICK JOSEPH WEST. ERNEST \VEST.

